Leave before 9 am: 93% depart on time. After 4 pm it’s barely half.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Southwest flight on this route ran 150+ times in the year.
All 6 Southwest flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| WN 3934 | STL 06:00 | LAS 07:25 | 3h 25m | 49 | 88% | 0.0% | 52 min |
| WN 1635 | STL 08:00 | LAS 09:25 | 3h 25m | 16 | 88% | 0.0% | 28 min |
| WN 2327 | STL 09:15 | LAS 10:40 | 3h 25m | 26 | 77% | 0.0% | 79 min |
| WN 4359 | STL 14:20 | LAS 15:45 | 3h 25m | 49 | 59% | 0.0% | 45 min |
| WN 3935 | STL 19:40 | LAS 21:05 | 3h 25m | 50 | 14% | 2.0% | 56 min |
| WN 3936 | STL 21:50 | LAS 23:18 | 3h 28m | 50 | 60% | 0.0% | 63 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Southwest | STL | LAS | 3h 35m | 77% | 0.3% | 1,785 | Flying now |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON